34685891 has 4 divisors (see below), whose sum is σ = 34702800. Its totient is φ = 34668984.

The previous prime is 34685879. The next prime is 34685927. The reversal of 34685891 is 19858643.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19858643 = 7 ⋅2836949.

It is a cyclic number.

It is not a de Polignac number, because 34685891 - 2¹⁴ = 34669507 is a prime.

It is a super-2 number, since 2×34685891² = 2406222068927762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34685591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4871 + ... + 9648.

It is an arithmetic number, because the mean of its divisors is an integer number (8675700).

Almost surely, 2^34685891 is an apocalyptic number.

34685891 is a deficient number, since it is larger than the sum of its proper divisors (16909).

34685891 is a wasteful number, since it uses less digits than its factorization.

34685891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16908.

The product of its digits is 207360, while the sum is 44.

The square root of 34685891 is about 5889.4728966182. The cubic root of 34685891 is about 326.1251448472.

The spelling of 34685891 in words is "thirty-four million, six hundred eighty-five thousand, eight hundred ninety-one".